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Treasure Key item
Treasure Key is an unlockable active item in Benighted Soul, a mod for The Binding of Isaac.
Description
Teleports to a temporary Chest Room.
Grants a 
Golden Key.
In Greed Mode, instead, teleports to Error Room
(while it's a non-greed item).
How to unlock?
Defeat Mom's Heart on Hard Mode as Benighted Lost.
Item pools
Treasure Key can be found in the following item pools:
| Name | Weight |
|---|---|
| Shop |
1.0/1.0
|
| Key Master |
1.0/1.0
|
Tags
The following tags are applied to this item:
| Id | Description |
|---|---|
| offensive | Can appear for  Tainted Lost. |
| nocantrip | Not available as card effects during the Cantripped! challenge. |
| nogreed | Not available in Greed Mode. |
Special synergies
The following special synergies and interactions for Treasure Key have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | Book of Virtues | Spawns an inner wisp that does not shoot but spawn a chest when killed. |
| --- | The Book of Belial combined with Judas' Birthright | Instead, teleports to a qualified Curse Room. |
| --- | Void | Does not teleport. |
* Note that not all possible synergies and interactions are listed here.
External links
- Download Benighted Soul from the Steam Workshop.
Chest Chest 
Cheese Cutter 
Turbo 
AKEY-47 
The Silver Key 
Truth Chest